Answer:
of course its true
Step-by-step explanation:
 
        
             
        
        
        
Answer:
h=6
Step-by-step explanation:
a=b x h x 0.5
9=3 x h x 0.5
9/3=3/.5=6
h=6
 
        
                    
             
        
        
        
Y-intercept means x=0 but judging from the question you only gave f(x) which means Y
And so I think the only valid answer there is 
Y= 0.25
X=0
        
             
        
        
        
Answer:
6
Step-by-step explanation:
Step 1:
16 = 4 + 2x
Step 2:
12 = 2x
Answer:
6 = x
Hope This Helps :)